Yes. There are also many published cases and case-series of extraadrenal retroperitoneal neuroendocrine tumors. As embryologically both the chromaffin cells and ganglion cells are derived from neural crest and further migrated to different areas it is possible to find NET almost elsewhere in the body. Surgery is usually cornerstone of the treatment strategy. Ablative techniques, radio- and chemotherapy as well as some options for drug, receptor targeting and other biologic therapies depend on the subtype of the tumor, its metabolitic activity and clinical presentation.